In $Rhizopus$,tubular thread-like structures bearing sporangia at their tips are called:

'Malarial parasite' divides into many daughter individuals simultaneously through multiple fission. State an advantage that the parasite gets because of this type of reproduction.

Grafting is which type of reproduction method?

In the process of reproduction as used in $Spirogyra$,the organism splits itself into small pieces.
$(a)$ What is this process of reproduction called?
$(b)$ Will this type of reproduction be asexual or sexual reproduction? Answer with reason.
$(c)$ Is this process same as regeneration? Give reasons.

In the process of grafting,what is the part of the plant that possesses the root system called?

Regeneration is not possible in all types of animals. Why?